Author Topic: Atlas SD45's shipping  (Read 21538 times)

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peteski

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Re: Atlas SD45's shipping
« Reply #210 on: December 14, 2025, 12:23:53 PM »
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Ok, I guess I don’t understand what was originally being asked then. On the board pictured above, I’m 98% certain the spot marked “NUM” is for the rear numberboards (or front if normally runs long hood forward).  But my guess that is not the question either.

Maybe it is me not understanding.
As I took it, Ed asked what function button (on the throttle?) will turn on the number boards when ESU decoder is installed.  He didn't mention that the decoder in question has the original Atlas SD45 sound project loaded in it. I took that as him asking what pin on the decoder connector is physically wired to the number board LEDs.
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tehachapifan

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Re: Atlas SD45's shipping
« Reply #211 on: December 14, 2025, 12:37:19 PM »
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Maybe it is me not understanding.
As I took it, Ed asked what function button (on the throttle?) will turn on the number boards when ESU decoder is installed.  He didn't mention that the decoder in question has the original Atlas SD45 sound project loaded in it. I took that as him asking what pin on the decoder connector is physically wired to the number board LEDs.

That's what I originally thought was being asked as well. but the picture of the buddy board above threw me off a bit. Let me see if I can find an ESU factory sound project for this loco and I'll look at it with my LP and see what function output the numberboards are connected to...

tehachapifan

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Re: Atlas SD45's shipping
« Reply #212 on: December 14, 2025, 12:49:22 PM »
+1
OK, it's probablt set up on AUX4. This AUX is tied to F8 in my Atlas SD45 but it doesn't have rear numberboards (only cab end). Does this answer the right question or am I still not getting it?

...if that isn't it, try F13. I looked at some other ESU factory files and AUX4 is often tied to F13 and set up as one of the rear (flashing) ditchlights. You may have to blast the horn with F13 on (and maybe only in a certain direction) and the numberboards may flash for a few seconds.
« Last Edit: December 14, 2025, 01:03:58 PM by tehachapifan »

Mark5

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Re: Atlas SD45's shipping
« Reply #213 on: December 14, 2025, 01:03:52 PM »
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I am guessing that Ed used the EMD 20-645E3 T Ed3 sound file in the decoder that he installed.

https://projects.esu.eu/projectoverviews/18


jagged ben

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Re: Atlas SD45's shipping
« Reply #214 on: December 14, 2025, 01:06:10 PM »
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It's not function output 4.  I believe it's function output 6.

The factory decoders on these are shipped with Tsunami2, not ESU.  And the way ESU maps functions there's no guarantee it's mapped on your decoder when you plug it in. So you may need to map AUX6 to a function on the ESU.

This assuming that FX6 on the Tsunami lines up with AUX 6 on the ESU. 

peteski

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Re: Atlas SD45's shipping
« Reply #215 on: December 14, 2025, 01:11:24 PM »
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Yes, I believe that ESUs AUX output nomenclature seems to follow the NMRA function output designations(F6 should be AUX 6).
I also forgot that Atlas is now using Tsunami decoders, so there probably isn't a custom Atlas ESU sound project for this model.  Fortunately the Next18 socket allows modelers to use a decoder of their choice.
« Last Edit: December 14, 2025, 01:13:11 PM by peteski »
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tehachapifan

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Re: Atlas SD45's shipping
« Reply #216 on: December 14, 2025, 01:15:12 PM »
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It's not function output 4.  I believe it's function output 6.

The factory decoders on these are shipped with Tsunami2, not ESU.  And the way ESU maps functions there's no guarantee it's mapped on your decoder when you plug it in. So you may need to map AUX6 to a function on the ESU.

This assuming that FX6 on the Tsunami lines up with AUX 6 on the ESU.

Yes, it could be AUX6. As I mentioned, I'm looking at my SP version (ESU decoder) without rear numberboards. If Ed is indeed using file SO859, AUX6 is not an active output in its default setting. If F13 doesn't do anything like I outlined above, AUX6 will need to be set up as an active output. Easy to do with a LP but much more difficult via CV settings alone (but very doable). AUX4 and F13 should still be tied to numberboards on one end or the other though (cab end on mine). I can do a CV change walk thru this evening if need be.
« Last Edit: December 14, 2025, 01:32:49 PM by tehachapifan »

jagged ben

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Re: Atlas SD45's shipping
« Reply #217 on: December 15, 2025, 01:19:36 AM »
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FWIW I use DecoderPro for my ESU function map changes and it's reasonably straightforward 

nstars

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Re: Atlas SD45's shipping
« Reply #218 on: December 15, 2025, 04:43:27 AM »
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To check function mapping you should just read the Soundtraxx decoder. That should give you enough info to determine which output has been used.

Marc

Ed Kapuscinski

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Re: Atlas SD45's shipping
« Reply #219 on: December 15, 2025, 01:13:25 PM »
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Sorry for the confusion.

I've installed an ESU decoder in my previous one and have another on the way for this one.

So the thing I'm trying to figure out is which decoder output (ie, which fX pad or whatever it's called) the number boards (via that plug) are connected to.

I'm sure I'll have to update my decoder info to automatically turn them on with the prime mover since I AM just using a default one with some tweaks. I think it's that 76407. https://projects.esu.eu/projects/print/76407

nstars

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Re: Atlas SD45's shipping
« Reply #220 on: December 15, 2025, 02:49:00 PM »
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Sorry for the confusion.

I've installed an ESU decoder in my previous one and have another on the way for this one.

So the thing I'm trying to figure out is which decoder output (ie, which fX pad or whatever it's called) the number boards (via that plug) are connected to.

I'm sure I'll have to update my decoder info to automatically turn them on with the prime mover since I AM just using a default one with some tweaks. I think it's that 76407. https://projects.esu.eu/projects/print/76407

When you read the CV’s in the Soundtraxx decoder you should be able to find out which output they use. According Spookshow, the number boards are controller bij function 27. Just check the function mapping in the Soundtraxx decoder.

Marc
« Last Edit: December 15, 2025, 02:52:56 PM by nstars »

Ed Kapuscinski

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Re: Atlas SD45's shipping
« Reply #221 on: December 15, 2025, 04:34:40 PM »
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Does anyone have the Soundtraxx decoder equipped version and can check for me?

Mark5

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Re: Atlas SD45's shipping
« Reply #222 on: December 15, 2025, 05:27:19 PM »
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Does anyone have the Soundtraxx decoder equipped version and can check for me?

@Ed Kapuscinski From Spookshow's site: "Note that F24 controls the cab interior light and F27 controls the number board lights (a fact that the included list of functions does not mention). "

https://www.spookshow.net/loco/atlassd45.html

Mark


nstars

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Re: Atlas SD45's shipping
« Reply #223 on: December 15, 2025, 05:51:23 PM »
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For the function mapping, check the CV's 16.1.257 to CV's 16.1.264 for a value of 27 (if the function button is indeed 27). As far as I know FX3 in Soundtraxx terms is synonymous to AUX1 etc. FX3 is 16.1.259, FX4 is CV16.1.260, FX5 is 16.1.261 etc. up to FX8. I doubt that FX7 and FX8 is used for the number boars as these output's are used by the speaker in the sound version of the Next18 connector. Note the 16.1 have to be programmed in CV31 and CV32 to be able to read the indexed CV's

Marc

tehachapifan

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Re: Atlas SD45's shipping
« Reply #224 on: December 15, 2025, 07:13:24 PM »
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Ed, is it an ESU sound or non-sound decoder? If it is sound, what sound file is installed? As I mentioned earlier, depending on the sound file, the output that would control the numberboards may not be currently active.